Flaherty, J. E. (2002). Peter Drucker: Shaping the Managerial Mind. Jossey-Bass.
Lua i Stíl Chicago (17ú heag.)Flaherty, John E. Peter Drucker: Shaping the Managerial Mind. San Francisco, Calif: Jossey-Bass, 2002.
Lua MLA (9ú heag.)Flaherty, John E. Peter Drucker: Shaping the Managerial Mind. Jossey-Bass, 2002.
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